Ultraviolet Coating (UV)

A coating that blocks ultraviolet rays.

Utilization Review

The process of reviewing the appropriateness and quality of care provided to patients.

VDT (Video Display Terminal)

A term that refers to a specific type of glasses designed to be worn while working on the computer to address the different visual requirements and distance of the wearer. May also be referred to as occupational glasses and addresses a condition commonly referred to as computer vision syndrome. Usually VDT glasses are only covered as a second pair if they are ordered at the same time as the primary or main pair.

Visual Acuity

Degree of visual sharpness, as determined by a conformance to or deviation from the standard 20/20 measurement.